#include <ctype.h> #include <signal.h> #include <stdlib.h> #include <string.h> #include <termios.h> #include <unistd.h> /* A very simple keygrabber. */ struct termios tp; void reset_term(int x) { tcsetattr(0,TCSANOW,&tp); exit(x); } int main(int argc, char **argv) { char foo[2]; char *list; int alarmlen=0; int tp_if,tp_of,tp_lf; int x; if (argc>1) { if (argv[1][0]=='-' && isdigit(argv[1][1])) { alarmlen = atoi(argv[1]+1); list = argv[2]; } else { list = argv[1]; } for (x=0;list[x];x++) list[x]=toupper(list[x]); } foo[0]=foo[1]='\0'; signal(SIGTERM,reset_term); alarm(alarmlen); signal(SIGALRM,reset_term); tcgetattr(0,&tp); tp_if=tp.c_iflag; tp_of=tp.c_oflag; tp_lf=tp.c_lflag; tp.c_iflag=0; tp.c_oflag &= ~OPOST; tp.c_lflag &= ~(ISIG | ICANON); tcsetattr(0,TCSANOW,&tp); tp.c_iflag=tp_if; tp.c_oflag=tp_of; tp.c_lflag=tp_lf; while (1) { read(0,foo,1); foo[0]=toupper(foo[0]); /* Die if we get a control-c or control-d */ if (foo[0]==3 || foo[0]==4) reset_term(1); if ((!list) || strstr(list,foo)) { reset_term(0); } } }